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RED BOX | Stationary hot water pressure washers

Stationary hot water pressure washers


Stationary hot water pressure washers for professional and industrial use.

Increased productivity for removing stubborn dirt, encrusted, oily and greasy stains thanks to hot water that dissolves dirt more quickly, optimising work time and reducing detergent consumption.



Robust, compact and high-performance professional high-pressure cleaners with a high efficiency boiler.

Red box high-pressure washers are designed for professional and industrial use and stand out for the high reliability of their components.

High-performance electric motors stabilise the operating temperature at constant values and the three ceramic piston inline pumps used guarantee maximum reliability.

The construction choices made allow Red box high-pressure cleaners to be used without cooling pauses.

Caldaie alto rendimento per idropulitrici professionali
SIRMAC RED BOX | Idropulitrici ad acqua calda posto fisso inox




Motori servizio continuo S1

I motori elettrici offrono elevate prestazioni stabilizzando la temperatura di esercizio in valori costanti per un utilizzo illimitato grazie al servizio continuo in S1.

La potenza del motore scelta per l’accoppiamento alle pompe è sempre sovradimensionata in modo che la potenza richiesta dalle pompe non raggiunga mai i valori massimi disponibili. 

Pompe professionali 1450 rpm

Le pompe in linea a 3 pistoni in ceramica sono ampiamente sovradimensionate, permettendo l’utilizzo solo parziale della pressione massima per cui sono state progettate.

Questa caratteristica, unitamente a quella dei motori elettrici in servizio continuo S1, permette alle idropulitrici Indra di lavorare senza pause di raffreddamento.

L’accoppiamento pompa-motore non è diretto, bensì è realizzato mediante giunto elastico per permettere che nel tempo, in caso di rottura del sistema di accoppiamento, l’intervento sia di lieve entità e rapido e non con la prospettiva di grosse operazioni di sostituzione di componenti. 

Sistemi di sicurezza avanzati

Le idropulitrici Indra sono dotate di una solida scheda elettronica, specificamente progettata, che gestisce le funzioni della macchina e tutte le segnalazioni. 

Tutte le funzioni e segnalazioni vengono gestiti in completa sicurezza, garantendo la risoluzione immediata di eventuali guasti. La gamma è infatti dotata di sicurezze avanzate e la scheda elettronica segnala al riparatore, con appositi led posti sul circuito stampato, il corretto funzionamento o eventuali avarie dei componenti elettrici. Vi è inoltre una segnalazione completa delle funzioni direttamente sul pannello comandi per consultazione e controllo da parte dell’utilizzatore. 


settori d'applicazione

Red box high-pressure cleaners, if placed in a technical room, can supply a water network that connects the machine to the washing location. They are indispensable in many areas such as: • Vehicle washing • Car repair • Food industries • Charcuterie and cheese factories • Meat processing and distribution • Poultry farms for cleaning and sanitation of breeding areas • Livestock farms for cleaning and sanitation of delivery, feeding and breeding rooms • Milking plants • Egg producers • Washing of operating rooms and mobile packaging lines • Food storage companies • Mechanical industries • Chemical industries • Wine companies • Washing barrels, tanks also in combination with rotating heads • Fish processing and distribution industries • Production of ready-made and precooked food • Washing in covered food and fruit markets • Construction sites • Shipyards • Airports • Harbours and docks • Mechanical industries for washing at the end of processing cycles.

Stationary professional high-pressure washers

The Red Box high-pressure cleaner range is robust and compact; all models are equipped with a high-performance boiler.

The electronic board is highly professional.

The autotransformer that distributes the power supply is independent of the circuit board and fixed on a metal plate.

On the printed circuit board, a number of micro-led lights alert maintenance staff to the origin of any malfunctions.

Heavy-duty electric motors, which stabilise the operating temperature at constant and absolutely suitable values, and largely over-dimensioned 3 ceramic piston inline pumps, which work by only partially utilising the maximum operating pressure for which they have been designed 

allow each model to be used continuously without the need for cooling pauses.

For coupling to 21 L/min 150bar pumps, an 8.5HP motor is correctly chosen and not 7.5HP as is commonly used.

The pump-motor connection is by means of a flexible coupling located in the gap between the two motor flanges.


the red box range, thanks to its robust and compact design and its high-efficiency boiler, is ideally suited for use in small and medium-sized companies operating in the


A complete and highly professional range, ideal for use in long cleaning shifts.




RED BOX 15.150150 BAR15 L/min1450 rpm5,5 HP3ph - 4,7 kW30 - 140 °C97x68x99 cm
RED BOX 18.160160 BAR18 L/min1450 rpm7,5 HP3ph - 5,9 kW30 - 140 °C97x68x99 cm
RED BOX 15.200200 BAR15 L/min1450 rpm7,5 HP3ph - 6,5 kW30 - 140 °C97x68x99 cm
RED BOX 21.150150 BAR21 L/min1450 rpm8,5 HP3ph - 7,6 kW30 - 140 °C97x68x99 cm
RED BOX 21.200200 BAR21 L/min1450 rpm10 HP3ph - 8,8 kW30 - 140 °C97x68x99 cm
RED BOX 21.250250 BAR21 L/min1450 rpm15 HP3ph - 12 kW30 - 140 °C97x68x99 cm




Robust, professional and compact: • Painted steel structure with removable AISI 304 stainless steel panels for effective and immediate maintenance • 3 ceramic piston pump • 1450 rpm electric motor, continuous duty S1 • Pump-motor connection with double flange and elastic coupling • Pressure regulating valve • Safety valve • 13L stainless steel water tank with mechanical floater for inlet flow control • Stainless steel electrical equipment container • Anti-limescale product dosing pump controlled by the PCB • Water filter.


Red Box is protected by a multiple security system: with regard to combustion, safety in the Red Box range is guaranteed by a microswitch (5), a pressure switch (1) and a flow switch (4). The burner start and stop functions are regulated by sensing both water flow and pressure.

If one of the devices fails, signalling lack of flow or pressure, combustion is in any case immediately stopped or burner ignition is not permitted.

This multiple system gives an extra guarantee that combustion will stop even if the water no longer circulates in the coil, avoiding the risk of overheating.

SIRMAC INDRA | Idropulitrici ad acqua calda professionali


Simple and intuitive 24V control panel, complete with: • Pump on/off switch • Boiler on/off switch • Voltage indicator • Operating pump indicator • Operating boiler indicator • Low diesel warning light • Lack of limescale indicator • Thermostat • Pressure gauge • Pressure and flow adjusting valve • Detergent regulating valve.

Timed intelligent total stop: motor stops after 15 seconds with gun closed; total stop after 10 seconds of operation without water; total stop due to accumulation of 10 microleaks; safety system that disables all functions when the motor is not started within 60 minutes.


The structure is equipped with extendable support feet that allow the height of the cleaner to be adjusted, bringing the control panel to an ergonomic height without the need to add a bench support (can be supplied on request).



Diesel filtration system consisting of:

A.  Pre-filter, for the retention of coarse particles (120 µm)

B.  Cartridge filter to retain the finer impurities (31 µm)

C.  Self-cleaning filter immersed in diesel to prevent suction of processing residues. A counterweight keeps it constantly on the bottom.

The adoption of this triple filtration system does not allow the operation of the diesel pump to be altered, keeping the small emergency filter with which it is equipped clean at all times.

efficiency and savings

High efficiency, high performance boiler unit with emissions between 0 and 1 on the Bacharach scale.

Caldaia INDRA
Serpentine per idropulitrici ad acqua calda

are you interested in stationary professional and industrial hot water pressure washers?

We will be happy to help you choose the best pressure washer.



The accessories are for professional use, in compliance with safety regulations. The included 15 m high-pressure hose allows to wash large equipment at a safe distance from the cleaner.

250 BAR

150 - 200 BAR


on demand

rdb pannello